123457960

素因数分解:

$2^3\times 5^1\times {\mathrm{1061}}^1\times {\mathrm{2909}}^1$

素因数の和:3981

約数の個数: 32

約数和(自身を含む): 278137800

約数和(自身を除く): 154679840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1061, 2122, 2909, 4244, 5305, 5818, 8488, 10610, 11636, 14545, 21220, 23272, 29090, 42440, 58180, 116360, 3086449, 6172898, 12345796, 15432245, 24691592, 30864490, 61728980, 123457960]

約数ペア:

[(1, 123457960), (2, 61728980), (4, 30864490), (5, 24691592), (8, 15432245), (10, 12345796), (20, 6172898), (40, 3086449), (1061, 116360), (2122, 58180), (2909, 42440), (4244, 29090), (5305, 23272), (5818, 21220), (8488, 14545), (10610, 11636)]